A:
Positive:
1 x 7642044855 x 15284089711 x 6947313517 x 4495320555 x 1389462785 x 8990641187 x 4086655935 x 817331
Negative:
-1 x -764204485-5 x -152840897-11 x -69473135-17 x -44953205-55 x -13894627-85 x -8990641-187 x -4086655-935 x -817331
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 764,204,485, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 764,204,485 | |
| -1 | -764,204,485 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 764,204,485.
Example:
1 x 764,204,485 = 764,204,485
and
-1 x -764,204,485 = 764,204,485
Notice both answers equal 764,204,485
With that explanation out of the way, let's continue. Next, we take the number 764,204,485 and divide it by 2:
764,204,485 ÷ 2 = 382,102,242.5
If the quotient is a whole number, then 2 and 382,102,242.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 764,204,485 | |
| -1 | -764,204,485 |
Now, we try dividing 764,204,485 by 3:
764,204,485 ÷ 3 = 254,734,828.3333
If the quotient is a whole number, then 3 and 254,734,828.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 764,204,485 | |
| -1 | -764,204,485 |
Let's try dividing by 4:
764,204,485 ÷ 4 = 191,051,121.25
If the quotient is a whole number, then 4 and 191,051,121.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 764,204,485 | |
| -1 | 764,204,485 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 17 | 55 | 85 | 187 | 935 | 817,331 | 4,086,655 | 8,990,641 | 13,894,627 | 44,953,205 | 69,473,135 | 152,840,897 | 764,204,485 |
| -1 | -5 | -11 | -17 | -55 | -85 | -187 | -935 | -817,331 | -4,086,655 | -8,990,641 | -13,894,627 | -44,953,205 | -69,473,135 | -152,840,897 | -764,204,485 |
Here are some more numbers to try:
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